diff options
| author | Isaku Yamahata <yamahata@valinux.co.jp> | 2008-05-19 15:13:30 +0200 |
|---|---|---|
| committer | Tony Luck <tony.luck@intel.com> | 2008-05-27 23:38:44 +0200 |
| commit | 0e1a77ccdbc4ca59ccaf84168a0c3c1df4fadfc0 (patch) | |
| tree | ceee49874e01183a1871778744c4033864853585 /include/asm-ia64/intrinsics.h | |
| parent | [IA64] pvops: preparation: move the constants, LOAD_OFFSET, to a header file. (diff) | |
| download | linux-0e1a77ccdbc4ca59ccaf84168a0c3c1df4fadfc0.tar.xz linux-0e1a77ccdbc4ca59ccaf84168a0c3c1df4fadfc0.zip | |
[IA64] pvops: preparation: introduce ia64_set_rr0_to_rr4() to make kernel paravirtualization friendly.
make kernel paravirtualization friendly by introducing
ia64_set_rr0_to_rr4().
ia64/Xen will replace setting rr[0-4] with single hypercall later.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Diffstat (limited to 'include/asm-ia64/intrinsics.h')
| -rw-r--r-- | include/asm-ia64/intrinsics.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/include/asm-ia64/intrinsics.h b/include/asm-ia64/intrinsics.h index f1135b5b94c3..9b83f8f01678 100644 --- a/include/asm-ia64/intrinsics.h +++ b/include/asm-ia64/intrinsics.h @@ -18,6 +18,15 @@ # include <asm/gcc_intrin.h> #endif +#define ia64_set_rr0_to_rr4(val0, val1, val2, val3, val4) \ +do { \ + ia64_set_rr(0x0000000000000000UL, (val0)); \ + ia64_set_rr(0x2000000000000000UL, (val1)); \ + ia64_set_rr(0x4000000000000000UL, (val2)); \ + ia64_set_rr(0x6000000000000000UL, (val3)); \ + ia64_set_rr(0x8000000000000000UL, (val4)); \ +} while (0) + /* * Force an unresolved reference if someone tries to use * ia64_fetch_and_add() with a bad value. |